侏罗纪搏击俱乐部 第25期:真正的凶手

Nanotyrannus is more like a cheetah on steroids.

矮暴龙更像是服了兴奋剂的猎豹。

These animals were really, really fast.

这些动物真的是非常之快。

They could outrun a Tyrannosaurus Rex no problem,and that also helped them when they're runningdown prey of course.

要跑过雷克斯暴龙完全没问题，这对它们追逐猎物也会有很大帮助。

And so they could surround something and run it todeath basically.

所以它们可以围着目标奔跑，基本就是这样拖垮猎物。

Nanotyrannus was large enough to take on this juvenile T-Rex and certainly able to outrun itsparents.

矮暴龙的体型足够干掉这头幼年霸王龙，也肯定能跑过它的父母。

Bones had been broken, but no bite marks were found on them.

骨头断裂了，不过上面没有发现咬痕。

This can help determine that it was the Nanotyrannus that killed the juvenile Rex.

这能帮助证明杀死小霸王龙的就是矮暴龙。

As a smaller animal, Nanotyrannus would not have the same kind of bite force that a bigTyrannosaur would have.

矮暴龙体型更小，没有巨大的霸王龙那么恐怖的咬合力。

Its jaws were relatively longer and more elongated and it had more teeth.

它们的双颚相对更长向前延伸，也有更多牙齿。

That suggests that it really never did develop the same kind of power that a Tyrannosaurs didpound for pound.

这表明就算按单位体重来说它们也从未发展出过霸王龙那样的力量。

Nanotyrannus would be a little more careful where it bit,

矮暴龙对咬在哪里会更加小心，

because it wouldn't have this great bone crushing quality that a full size Rex would have.

因为它并没有完全发育的像霸王龙那种咬碎骨头的能力。

This could explain why no bite marks were found on the bones.

这能说明为什么骨头上没有咬痕。

Nanotyrannus did not have the jaw muscles or tooth design for penetrating bone.

矮暴龙的颚肌和牙齿设计不能咬穿骨头。

Another hard look at the evidence would bring the scientists closer to the answer.

对证据再度仔细观察会让科学家们更接近答案。

When I saw the Nanotyrannus teeth that were found next to the juvenile skeleton, I had apretty good idea of what had happened.

当我看到在幼龙骨骸旁边发现的那些矮暴龙的牙齿时，我对发生了什么就有了基本了解。

But since no bite marks were found on the bones, it was hard to say with any real certaintythat the Nanotyrannus had actually killed the baby.

不过因为骨头上没有找到咬痕，就很难一口咬定说矮暴龙是杀死幼龙的凶手。

But then I took a second look at the teeth and I realized that these were shed teeth,

但是我又再次观察了这些牙，我意识到这些是脱落的牙，

that means, these were teeth that were broken off during the act of feeding.

这些是在进食时脱落掉下来的牙齿。

This means that Nanotyrannus had broken his teeth while attacking this baby TyrannosaurusRex.

这意味着在攻击幼霸王龙时矮暴龙有牙齿脱落。